Comparative studies of structural and optical properties of Nb2O5–Sb2O3–TeO2 glass and glass-ceramics

IF 0.3 4区材料科学 Q4 CHEMISTRY, PHYSICAL

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2022-01-01 DOI:10.13036/17533562.63.3.02

Rajesh Siripuram, P. Satya Gopal Rao, S. Sripada

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引用次数: 1

Abstract

A new, transparent antimony-tellurite glass and glass-ceramic systems doped with Nb2O5 have been prepared by using the conventional melt quenching method and heat treatment process, respectively. Various physical, optical and structural studies were reported through XRD, TEM, SEM, ultraviolet-visible, Raman, infrared and ESR investigations. XRD analysis of glass and glass-ceramic samples revealed their amorphous and crystalline natures, respectively. The Williamson-Hall approach was used to determine the average crystallite size of synthesised glass-ceramics and the values were found to be in the range of 23 to 85 nm. The SEM result reveals that glass-ceramics contain perspicuous and haphazardly distributed nanoclusters possessing sizes in the range of 45 to 120 nm. TEM analysis shows the size of particles in the glass-ceramics is in the range of 10 to 90 nm. The Eopt of the glass system has decreased from 2·873 to 2·606 eV, whereas in the glass-ceramic system it is observed to increase from 1·340 to 1·748 eV. Raman and infrared spectral analysis confirm the existence of various structural units such as TeO4, TeO3+1, TeO3, NbO6, NbO4, SbO3 in the glass and glass ceramic systems.The ESR spectral analysis reveals that the (Δg‖/Δg^) parameter seems to decrease from 4·444 to 2·453 in glass sytem, whereas in glass-ceramics it is observed to increase from 2·357 to 4·188. Glass transition temperature and onset crystalline temperatures are influenced by the Nb2O5 in both glass and glass-ceramic samples.

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Nb2O5-Sb2O3-TeO2玻璃与微晶玻璃结构及光学性能的比较研究

采用传统的熔体淬火法和热处理工艺制备了新型透明碲酸锑玻璃和掺Nb2O5的玻璃陶瓷体系。通过x射线衍射(XRD)、透射电镜(TEM)、扫描电镜(SEM)、紫外可见光谱(uv)、拉曼光谱(Raman)、红外光谱(ir)和ESR等方法对其进行了物理、光学和结构研究。玻璃和玻璃陶瓷样品的XRD分析分别显示了它们的非晶和结晶性质。Williamson-Hall方法用于测定合成微晶玻璃的平均晶粒尺寸，其值在23至85 nm之间。扫描电镜结果表明，微晶玻璃含有明显的、随机分布的纳米团簇，其尺寸在45 ~ 120 nm之间。TEM分析表明，微晶玻璃的颗粒尺寸在10 ~ 90nm之间。玻璃体系的Eopt从2.873 eV下降到2.606 eV，而玻璃陶瓷体系的Eopt从1.340 eV增加到1.748 eV。拉曼光谱和红外光谱分析证实了玻璃和玻璃陶瓷体系中存在TeO4、TeO3+1、TeO3、NbO6、NbO4、SbO3等多种结构单元。ESR谱分析表明，(Δg‖/Δg^)参数在玻璃体系中从4.444减小到2.453，而在微晶玻璃体系中从2.357增大到4.188。Nb2O5对玻璃和玻璃陶瓷样品的玻璃化转变温度和起晶温度均有影响。

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来源期刊

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B 工程技术-材料科学：硅酸盐

CiteScore

0.70

自引率

33.30%

发文量

审稿时长

1 months

期刊介绍： Physics and Chemistry of Glasses accepts papers of a more purely scientific interest concerned with glasses and their structure or properties. Thus the subject of a paper will normally determine the journal in which it will be published.